D.C. Mun. Regs. tit. 25, r. 25-D714

Current through Register Vol. 71, No. 49, December 6, 2024

Rule 25-D714 - NUMBERS AND CAPACITIES - BACKFLOW PREVENTION DEVICE, CARBONATOR*

714.1

If an air gap is not provided as specified in section 710, a double check valve with an intermediate vent preceded by a screen of not less than one hundred (100) mesh to twenty-five and four tenths millimeters (25.4 mm) (100 mesh to 1 inch) shall be installed upstream from a carbonating device and downstream from any copper in the water supply line.

714.2

A single or double check valve attached to the carbonator need not be of the vented type if an air gap or vented backflow prevention device has been otherwise provided as specified in section 713.1.

D.C. Mun. Regs. tit. 25, r. 25-D714

Final Rulemaking published at 56 DCR 7975 (October 9, 2009)

Authority: Section 4902 of the Department of Health Functions Clarification Act of 2001 ("Act") (effective October 3, 2001), D.C. Law 14-28, D.C. Official Code § 7-731(a)(12) (2008 Repl.), and the Mayor's Order 2006-10 dated January 27, 2006